Vyacheslav Egorov
5f490fabf7
Assembler now always knows whether LR contains return address or can be safely cloberred. TEST=tested through normal test suite Cq-Include-Trybots: luci.dart.try:vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try,vm-ffi-android-release-arm64-try,vm-ffi-android-release-arm-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-android-release-arm64-try Change-Id: I0b436509389cfd29ee413fd28930fb2d6b07616e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/174468 Commit-Queue: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM.
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#if defined(TARGET_ARCH_ARM)
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#include "vm/compiler/assembler/assembler.h"
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#include "vm/compiler/graph_intrinsifier.h"
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namespace dart {
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namespace compiler {
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#define __ assembler->
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intptr_t GraphIntrinsifier::ParameterSlotFromSp() {
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return -1;
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}
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void GraphIntrinsifier::IntrinsicCallPrologue(Assembler* assembler) {
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COMPILE_ASSERT(IsAbiPreservedRegister(CODE_REG));
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COMPILE_ASSERT(IsAbiPreservedRegister(ARGS_DESC_REG));
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COMPILE_ASSERT(IsAbiPreservedRegister(CALLEE_SAVED_TEMP));
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// Save LR by moving it to a callee saved temporary register.
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__ Comment("IntrinsicCallPrologue");
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SPILLS_RETURN_ADDRESS_FROM_LR_TO_REGISTER(
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__ mov(CALLEE_SAVED_TEMP, Operand(LR)));
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}
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void GraphIntrinsifier::IntrinsicCallEpilogue(Assembler* assembler) {
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// Restore LR.
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__ Comment("IntrinsicCallEpilogue");
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RESTORES_RETURN_ADDRESS_FROM_REGISTER_TO_LR(
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__ mov(LR, Operand(CALLEE_SAVED_TEMP)));
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}
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#undef __
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} // namespace compiler
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} // namespace dart
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#endif // defined(TARGET_ARCH_ARM)
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